body{
    font-family:"宋体";
    margin: 0px;
}

.container{
    width: 595.28pt;
    margin: auto;
    /*display: flex;*/
    justify-content: center;
    background-color: #FFFFFF;
}

.content{
    display: flex;
    flex-flow: row wrap;
    width: 100%;
    /*border: 1px grey solid;*/
    background-color: #FFFFFF;
}

.content img{
    /*min-width: 100%;*/
    /*height: auto;*/
}

.tips{
    position: fixed;
    left: 0px;
    top: -48px;
    width: 100%;
    font-size: 20px;
    color: white;
    height: 48px;
    display: none;
    align-items: center;
    justify-content: center;
    background-color: #00796B;
    transition: top 0.4s;
}

.btn{
    right: 8px;
    bottom: 8px;
    font-size: 20px;
    color: white;
    display: flex;
    align-items: center;
    padding: 4px 8px 4px 8px;
    position: fixed;
    background-color: #00796B;
    cursor: pointer;
    transition: background-color 0.4s;
}

.btn:hover{
    background-color: #009688;
}

.btn:active{
    background-color: #004D40;
}

.btn img{
    margin-right: 4px;
    width: 28px;
    height: 28px;
}